Our 25/400 is a high owe large-mode-area (LMA) double-clad thulium-doped fiber with a pedestal structure designed to operate efficientky across the 1.9 μm to 2.1 μm wavelenght range. Featuring a 25 μm core diameter and 400 μm pump cladding, this fiber is optimized to deliver high output power while prioritizing superior beam quality and high-brightness performance. This passive fiber has been designed to match active fibers such as the DCF-EY-6/128 and the DCF-EY-10/128H in order to minimize splicing losses. Moreover, it can be used for manufacturing passive components used in the design of fiber lasers and amplifiers.
LMA Tm doped fiber
DCF-TM-25/400P-08
Description
Features & Benefits
- Octogonal cladding shape
- High and constant pump absorption
- Tested at >100 kpsi to ensure long-term reliability during winding
- Strong power scaling capability
Applications
- Medical precision
- High brightness laser systems
- Coherent sensing
- Mid-IR pumping
- Directed energy and advanced research
Optical fiber specifications
Optical
Cladding Absorption @ 790 nm (dB/m)
3.9 ± 0.6
Numerical Aperture-Cladding
Min 0.45
Numerical Aperture-Core
0.085 ± 0.01
Geometrical & Mechanical
Cladding diameter (µm)
400 ± 10
Cladding geometry
Oct.
Coating Diameter (µm)
25 ± 1
Core Ovality (%)
<= 8
Core/Cladding Concentricity Error (µm)
<= 2
Proof test (kpsi)
>= 100
Environmental
Storage Temperature (°C)
-40 to +85
